Of alloy steel
Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel: > Other, welded: > Other: > Of alloy steel
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Products classified under HTS 7305.39.50.00
Offshore Platform Alloy Steel Riser Pipe
Welded alloy steel riser pipes >406.4 mm for connecting subsea wells to offshore platforms. HTS 7305.39.50.00: other welded alloy steel tubes, large circular diameter.
Industrial Slurry Transport Alloy Pipe
Abrasion-resistant welded alloy steel pipe >406.4 mm OD for mining slurry lines. Classified 7305.39.50.00 as large welded alloy circular pipes.
API 5L Grade B Alloy Steel Welded Pipe
Large-diameter welded pipe made from alloy steel, with external diameter over 406.4 mm, used primarily for oil and gas transmission pipelines. It falls under HTS 7305.39.50.00 as it is a welded tube/pipe of alloy steel with circular cross-section exceeding the specified diameter, not categorized elsewhere in heading 7305. Conforms to API standards for high-pressure applications.
Alloy Steel Welded Culvert Pipe
Heavy-duty welded alloy steel pipe with OD >406.4 mm, designed for stormwater drainage and culverts in infrastructure projects. Classified under 7305.39.50.00 due to its welded construction, circular cross-section, large diameter, and alloy steel material not fitting other subheadings.
Corrosion-Resistant Alloy Steel Transmission Pipe
Welded pipe of high-alloy steel (e.g., 5% Cr) with OD >406.4 mm for natural gas transmission lines. Under HTS 7305.39.50.00 as other welded alloy steel tubes/pipes meeting diameter and cross-section criteria.
Alloy Steel Welded Ventilation Duct Pipe
Large-diameter welded alloy steel pipe for industrial exhaust and ventilation systems in factories. Fits 7305.39.50.00: welded, circular cross-section >406.4 mm OD, alloy steel material.
Heavy Wall Alloy Steel Welded Cylinder
Extra-thick wall welded alloy steel cylinders >406.4 mm diameter for hydraulic accumulator housings. Classified 7305.39.50.00 as other large welded tubes/pipes of alloy steel.
Alloy Steel Large Chimney Flue Pipe
Welded alloy steel flue pipe sections exceeding 406.4 mm OD for industrial incinerator chimneys. Under 7305.39.50.00 for welded circular large-diameter alloy pipes.
Large Diameter Alloy Steel Penstock Pipe
Welded alloy steel pipe exceeding 406.4 mm OD, used in hydroelectric penstocks to convey water to turbines. Fits HTS 7305.39.50.00 as 'other welded tubes/pipes' of alloy steel with circular cross-section and large external diameter.
Alloy Steel Welded Piling Pipe
Extra-large welded alloy steel pipe (>406.4 mm OD) used as foundation piling in offshore platforms and bridges. Classified in 7305.39.50.00 for its welded, circular, large-diameter alloy steel construction.